package main;

import org.apache.commons.lang.StringUtils;

public class Stringnull {

	public static void main(String[] args) {
		String a = "";
		String b = "  ";
		String c = null;
		System.out.println(a.length());
		System.out.println(a.isEmpty());
		System.out.println(a.getBytes());
		System.out.println(b.length());
		System.out.println(b.isEmpty());
		System.out.println(b == "  ");
		System.out.println(c == null);
		System.out.println(StringUtils.isBlank(a));
		System.out.println(StringUtils.isBlank(b));
		System.out.println(StringUtils.isBlank(c));
	}
}
